1/* crypto/asn1/x_x509.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#include <stdio.h> 60#include "cryptlib.h" 61#include <openssl/evp.h> 62#include <openssl/asn1t.h> 63#include <openssl/x509.h> 64#include <openssl/x509v3.h> 65 66ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = { 67 ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0), 68 ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER), 69 ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR), 70 ASN1_SIMPLE(X509_CINF, issuer, X509_NAME), 71 ASN1_SIMPLE(X509_CINF, validity, X509_VAL), 72 ASN1_SIMPLE(X509_CINF, subject, X509_NAME), 73 ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY), 74 ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1), 75 ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2), 76 ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3) 77} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF) 78 79IMPLEMENT_ASN1_FUNCTIONS(X509_CINF) 80/* X509 top level structure needs a bit of customisation */ 81 82extern void policy_cache_free(X509_POLICY_CACHE *cache); 83 84static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 85 void *exarg) 86{ 87 X509 *ret = (X509 *)*pval; 88 89 switch (operation) { 90 91 case ASN1_OP_NEW_POST: 92 ret->valid = 0; 93 ret->name = NULL; 94 ret->ex_flags = 0; 95 ret->ex_pathlen = -1; 96 ret->skid = NULL; 97 ret->akid = NULL; 98#ifndef OPENSSL_NO_RFC3779 99 ret->rfc3779_addr = NULL; 100 ret->rfc3779_asid = NULL; 101#endif 102 ret->aux = NULL; 103 ret->crldp = NULL; 104 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data); 105 break; 106 107 case ASN1_OP_D2I_POST: 108 if (ret->name != NULL) 109 OPENSSL_free(ret->name); 110 ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0); 111 break; 112 113 case ASN1_OP_FREE_POST: 114 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data); 115 X509_CERT_AUX_free(ret->aux); 116 ASN1_OCTET_STRING_free(ret->skid); 117 AUTHORITY_KEYID_free(ret->akid); 118 CRL_DIST_POINTS_free(ret->crldp); 119 policy_cache_free(ret->policy_cache); 120 GENERAL_NAMES_free(ret->altname); 121 NAME_CONSTRAINTS_free(ret->nc); 122#ifndef OPENSSL_NO_RFC3779 123 sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free); 124 ASIdentifiers_free(ret->rfc3779_asid); 125#endif 126 127 if (ret->name != NULL) 128 OPENSSL_free(ret->name); 129 break; 130 131 } 132 133 return 1; 134 135} 136 137ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = { 138 ASN1_SIMPLE(X509, cert_info, X509_CINF), 139 ASN1_SIMPLE(X509, sig_alg, X509_ALGOR), 140 ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING) 141} ASN1_SEQUENCE_END_ref(X509, X509) 142 143IMPLEMENT_ASN1_FUNCTIONS(X509) 144 145IMPLEMENT_ASN1_DUP_FUNCTION(X509) 146 147int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 148 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 149{ 150 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp, 151 new_func, dup_func, free_func); 152} 153 154int X509_set_ex_data(X509 *r, int idx, void *arg) 155{ 156 return (CRYPTO_set_ex_data(&r->ex_data, idx, arg)); 157} 158 159void *X509_get_ex_data(X509 *r, int idx) 160{ 161 return (CRYPTO_get_ex_data(&r->ex_data, idx)); 162} 163 164/* 165 * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with 166 * extra info tagged on the end. Since these functions set how a certificate 167 * is trusted they should only be used when the certificate comes from a 168 * reliable source such as local storage. 169 */ 170 171X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length) 172{ 173 const unsigned char *q; 174 X509 *ret; 175 int freeret = 0; 176 177 /* Save start position */ 178 q = *pp; 179 180 if (!a || *a == NULL) { 181 freeret = 1; 182 } 183 ret = d2i_X509(a, &q, length); 184 /* If certificate unreadable then forget it */ 185 if (!ret) 186 return NULL; 187 /* update length */ 188 length -= q - *pp; 189 if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length)) 190 goto err; 191 *pp = q; 192 return ret; 193 err: 194 if (freeret) { 195 X509_free(ret); 196 if (a) 197 *a = NULL; 198 } 199 return NULL; 200} 201 202int i2d_X509_AUX(X509 *a, unsigned char **pp) 203{ 204 int length, tmplen; 205 unsigned char *start = pp != NULL ? *pp : NULL; 206 length = i2d_X509(a, pp); 207 if (length < 0 || a == NULL) 208 return length; 209 210 tmplen = i2d_X509_CERT_AUX(a->aux, pp); 211 if (tmplen < 0) { 212 if (start != NULL) 213 *pp = start; 214 return tmplen; 215 } 216 length += tmplen; 217 218 return length; 219} 220 221int i2d_re_X509_tbs(X509 *x, unsigned char **pp) 222{ 223 x->cert_info->enc.modified = 1; 224 return i2d_X509_CINF(x->cert_info, pp); 225} 226 227void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg, 228 const X509 *x) 229{ 230 if (psig) 231 *psig = x->signature; 232 if (palg) 233 *palg = x->sig_alg; 234} 235 236int X509_get_signature_nid(const X509 *x) 237{ 238 return OBJ_obj2nid(x->sig_alg->algorithm); 239} 240